Electro Hardware MM1550M09-MSC Hex Standoff 8-32 3/4in

Product Description

The ELECTRO HARDWARE MM1550M09-MSC is a male-to-male hex circuit board standoff machined from 18-8 grade 303 stainless steel with a passivated finish. It carries an 8-32 thread on both ends and measures 0.75 inches overall length with a 0.75 inch body length. The hex body measures 5/16 inches across flats, allowing standard wrench engagement during installation. Passivation per QQ-S-763 enhances corrosion resistance, making this standoff suitable for electronics assemblies exposed to moisture or light chemical environments. Electricians, electronics technicians, and PCB assembly professionals install these to create fixed spacing and mechanical standoff between circuit boards and chassis surfaces or between stacked boards.

This standoff is used in circuit board mounting applications across industrial controls, HVAC control boards, electrical enclosures, and general electronics assemblies. The male-male thread configuration allows it to thread into a tapped hole on one end and accept a nut or mating female standoff on the other, enabling flexible stacking configurations. It is sized for inch-measurement fastener systems and fits boards where 8-32 thread engagement is specified.

Key Features

• Male-to-male 8-32 threaded ends for versatile board stacking and chassis mounting
• 18-8 grade 303 stainless steel construction for corrosion resistance and durability
• Passivated finish meeting QQ-S-763 standard
• Hex body profile at 5/16 inches across flats for wrench or socket installation
• 0.75 inches overall length providing consistent board spacing in tight enclosures
• Weighs 0.18 pounds per package — lightweight addition to any fastener stock

Compatibility

Designed as an OEM-style replacement or service standoff for circuit board assemblies using 8-32 inch-thread fastener systems in residential and commercial electrical and electronic equipment.

Installation Notes

Installation is performed by licensed electricians or qualified electronics technicians. Always power down and de-energize the equipment before working on any circuit board assembly. Use an appropriately sized wrench or socket on the hex body to avoid damaging the stainless threads during torquing. Do not over-torque into tapped plastic standoff holes, as 303 stainless is harder than most PCB substrate materials and may strip the mating thread.